SOLUTION: What is the number missing in the sequence below? 4,7,11,17 (), 39 is it 26? 4+2=6 7+2=9 11+2=13 then, 7+4=11 11+6=17 17+9=26 26+13=39 is this correct?

Question 927481: What is the number missing in the sequence below?
4,7,11,17 (), 39
is it 26?
4+2=6
7+2=9
11+2=13
then,
7+4=11
11+6=17
17+9=26
26+13=39
is this correct?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
26 seems like the best answer. If you look at the common differences when () = 26, you obtain 3, 4, 6, 9, 13. Looking at the common differences of the next sequence, we have 1, 2, 3, 4, and then 1, 1, 1. However one could probably provide a convincing argument of why 25 or 27 is the missing number, or any number, since sequences can be arbitrary. These types of sequence problems generally aren't very good.
RELATED QUESTIONS
What is the next number in this sequence.... (answered by ikleyn)

measure of position... find Q1,Q2,and Q3 for the following set of scores of 11... (answered by CPhill)

The positive integers are arranged in the pattern illustrated below: 1 2 5 10 17 26 3 (answered by greenestamps)

Based on the data shown below, calculate the regression line (each value to two decimal... (answered by ikleyn,MathLover1)

Find the nth term of the sequence 1/5, 1/3, 3/7, 1/2, 5/9, 3/5, 7/11, 2/3, 9/13,... (answered by lynnlo)

what is the sequence of this (2, 3, 4, 5, 7, 8 ,9, 10, 11, 13, 14, 15, 16 ,17, 19, 21,... (answered by richard1234)

5x/6-14=11 17-8x/9=-7... (answered by stanbon,mananth)

find the mean, mode, median and range 1. 6, 13, 17, 14, 9, 13 2. 6, 15, 12, 17, 10... (answered by Fombitz)

1. 6, 15, 12, 17, 10 2. 17, 11, 16, 18, 11, 6, 19, 20, 17, 15 3. 15, 20, 7, 14, 10, 7,... (answered by Fombitz)